Thermoacoustic soundproofing panel

ABSTRACT

A thermoacoustic soundproofing panel, constituted by at least one first mat and one second mat, each provided with individual and distinct pockets, which are mutually adjacent and are filled with an inert material; the first mat and second mat being mutually adjacent and mutually offset along a horizontal axis and/or a vertical axis.

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS

This application claims the benefit of Italian Patent Application No. 102017000058435, filed on May 30, 2017, the contents of which are herein incorporated by reference in their entirety.

TECHNICAL FIELD

The present disclosure relates to a thermoacoustic soundproofing or sound insulation panel which is used for vertical walls, such as walls of dwellings, or partitions or movable walls, or for horizontal floor-mounted walls, with a footsteps noise prevention function, or for flat or inclined roofs, or for fire doors.

Use can also occur in the industrial sector in which there are still machines with a high dB index, by covering the various enclosures with the panel.

BACKGROUND

Acoustic panels are currently known which are usually provided by means of substantially rigid and flexible materials and are used for example to provide noise barriers.

Soundproofing acoustic panels are known which are constituted substantially by two rigid half-shells made of metallic material, which are mutually coupled with the interposition of a layer of rock wool or glass wool or of two sheets of rubber or cross-linked expanded polyethylene with, at the center, a 3/10- to 5-mm lead lamina; furthermore, loaded rubbers with high relative density, or rubbers from recycled tire material with thicknesses from 1 to 5 cm, are used; these, in case of fire, generate highly dangerous fumes.

Furthermore, these panels cannot be used in dwellings or in furniture or in flat or inclined roofs owing to their composite structure, which leads to high thicknesses and makes them bulky, to the difficulty in installation and their high overall cost, which also comprises the cost of storage and transport, both of which are high due to their bulky structure.

Another drawback is that their laying entails an adjacent arrangement of multiple panels which cannot be overlapped and thus create regions in which sound waves may not be blocked.

Furthermore, these conventional panels are not incombustible, and especially the ones made of rock or glass wool are not recyclable.

Panels made of synthetic material are also known which are used to provide false ceilings or to cover walls and on one of the faces of said panels there are surfaces which have variously irregular profiles in order to reflect an incident wave with a preset reference frequency; however, this solution is inherently limited to a specific incident sound wave and therefore finds specific and limited uses.

SUMMARY

The aim of the present disclosure is therefore to solve the described technical problems, eliminating the drawbacks of the cited background art and thus providing a thermoacoustic soundproofing panel which, in addition to having optimum characteristics of absorption of all the sound waves that are incident thereon, is at the same time applicable rapidly and simply also within civil or industrial dwellings or roofs, adapting to the shape of the places in which it is laid.

Another important feature of the disclosure is to obtain a thermoacoustic soundproofing panel that has modest storage and transport costs and can be installed rapidly and simply.

Another feature is to obtain a thermoacoustic soundproofing panel which combines with the preceding characteristics that of being easy to handle and install even by personnel that is not particularly trained.

Another advantage is to obtain a thermoacoustic soundproofing panel which combines the preceding characteristics with that of avoiding the forming of regions in which noise may penetrate.

Another advantage of the disclosure is to obtain a thermoacoustic soundproofing panel that has high fire resistance characteristics.

The disclosure further provides a thermoacoustic soundproofing panel that is structurally simple and has modest manufacturing, storage and transport costs.

These features and advantages which will become better apparent hereinafter are achieved by providing a thermoacoustic soundproofing panel, comprising at least one first mat and one second mat, each provided with individual and distinct pockets, which are mutually adjacent and are filled with an inert material, said at least one first mat and one second mat being mutually adjacent and mutually offset along a horizontal axis and/or a vertical axis.

BRIEF DESCRIPTION OF THE DRAWINGS

Further characteristics and advantages of the disclosure will become better apparent from the detailed description of a particular but not exclusive embodiment of the panel according to the disclosure, illustrated by way of non-limiting example in the accompanying drawings, wherein:

FIG. 1 is a lateral perspective view of the panel, showing the composition of the two mats;

FIG. 2 is a sectional view of the panel, taken along the sectional plane II-II of FIG. 1;

FIG. 3 is a front view of the panel according to FIG. 1;

FIG. 4 is a view of the panel of FIG. 1, turned over at one end;

FIG. 5 is a view of a constructive variation of the panel; and

FIG. 6 is a front view of the panel of FIG. 5.

DETAILED DESCRIPTION OF THE DRAWINGS

In the exemplary embodiments that follow, individual characteristics, given in relation to specific examples, may actually be interchanged with other different characteristics that exist in other exemplary embodiments.

With reference to FIGS. 1-6, the reference numeral 1 designates a thermoacoustic soundproofing panel that is used for vertical walls, such as walls of dwellings, or partitions or movable walls, or for floor-mounted horizontal walls, with a footsteps noise prevention function, or for flat or inclined roofs, or for fire doors, or in the industrial sector where machines with a high decibel index persist.

The panel 1 is constituted by at least one first mat 2 and at least one second mat 3, each provided with a plurality of individual and distinct pockets 4, which are mutually adjacent and are filled with an inert material 5, such as sand in general, such as fine sand, medium-fine sand and/or coarse or even ordinary fine, medium-fine or coarse soil; in any case, inert materials which have a relative density which can range from 800 kg/m³ to 1700 kg/m³ are preferred.

The various pockets 4 are mutually independent but are connected and divided sequentially from each other by means of first horizontal bands 6 and second vertical bands 7 which are obtained by thermoforming or other known connection methods such as for example sewing or others.

The dimension and shape of each pocket, both in the first mat 2 and in the second mat 3, can vary as a function of specific requirements.

In the first embodiment shown in FIGS. 1 to 4, pockets 4 have been preferably considered which substantially have the same rectangular shape, the same height, but do not all have the same size in terms of width, the pockets 4 of the first mat 2 that are arranged at the ends of the panel 1 being narrower than the corresponding ones of the second mat 3 once they are assembled to constitute the panel 1.

In the embodiment shown in FIGS. 5 and 6, all the pockets 4 of the first and second mats are identical in terms of shape and size.

In both embodiments, the first and second mats 2, 3 are mutually adjacent and are mutually offset along a horizontal axis 8 and/or a vertical axis 9 by a chosen space.

A consequence of this is the fact that in the panel 1, once the first and second mats 2, 3 have been mutually assembled for example by mutual adhesive bonding of the respective lateral surfaces 10, 11 arranged mutually adjacent beforehand, there are substantially coinciding vertical lateral edges 12 a, 12 b, 12 c, 12 d which substantially coincide for the first and second mats 2, 3, while for the first mat 2 there are horizontal perimetric edges 13 a, 13 b which are offset with respect to the horizontal perimetric edges 14 a, 14 b of the second mat 3.

The first horizontal bands 6 and the second horizontal vertical bands 7 are likewise offset.

By doing so, as shown in FIG. 2, the first mat 2 has the regions affected by the first horizontal bands 6 and by the second vertical bands 7 which are offset with respect to those of the second mat 3, except for the vertical lateral edges 12 a, 12 b, 12 c, 12 d of the panel 1.

Since the regions on which the first horizontal bands 6 and the second vertical bands 7 act are regions in which noise may be transmitted more easily, in the panel 1 thus obtained the thickest pocket portion 4 is to the side of each one of said first horizontal bands 6 and second vertical bands 7 except for the horizontal lateral edges 13 a, 14 a and 13 b, 14 b.

In this manner, the panel 1 has a great uniformity in retaining noise.

The assembly of the first mat 2 to the second mat 3, so as to constitute the panel 1, can occur, as an alternative to or in combination with thermoforming, by sewing the respective horizontal lateral edges 13 a, 14 a and 13 b, 14 b to a strap (not shown) made of a chosen fabric which connects them.

Multiple panels 1 can then be used by superimposing them vertically on each other so as to arrange the horizontal lateral edge 13 a, 13 b of one at the lateral horizontal lateral edge 14 b, 14 a of the other.

In FIGS. 5 and 6, all the pockets 4 of the first and second mats 2, 3 are identical in shape and size; the offset therefore leads to the forming, for the panel 1, of protruding portions of an individual mat at the four sides; this allows an optimum overlap of multiple panels, having, at each side, the arrangement of the first horizontal bands 6 and of the second vertical bands 7 at the thicker pocket portion 4.

It has thus been found that the disclosure has achieved the intended aims and advantage by providing a thermoacoustic soundproofing panel, which in addition to having optimum characteristics of absorption of all the sound waves that are incident thereon, is at the same time applicable rapidly and simply also within civil or industrial dwellings or roofs or fire doors, adapting itself to the shape of the places in which it is installed.

Furthermore, the thermoacoustic soundproofing panel has modest storage and transport costs, since it can also be rolled up and furthermore can be installed rapidly and simply, being easy to handle and install even by personnel that is not particularly trained.

By virtue of the offset between the two mats, furthermore, the forming of regions in which noise may penetrate is avoided.

Finally, the panel can be made of a material that has high fire resistance characteristics.

The disclosure is of course susceptible of numerous modifications and variations.

The materials used, as well as the dimensions that constitute the individual components of the disclosure, may of course be more pertinent according to the specific requirements.

The characteristics indicated as advantageous, convenient or the like may also be omitted or be replaced with equivalents. 

1. A thermoacoustic soundproofing panel, comprising at least one first mat and one second mat, each provided with a plurality of individual and distinct pockets, which are mutually adjacent and are filled with an inert material, said at least one first mat and one second mat being mutually adjacent and mutually offset along a horizontal axis or a vertical axis.
 2. The panel according to claim 1, wherein said inert material has a relative density that ranges from 800 kg/m³ to 1700 kg/m³, such as fine sand, medium-fine sand, coarse sand, fine soil, medium-fine soil, or coarse soil.
 3. The panel according to claim 1, wherein said pockets are mutually independent but are connected and divided sequentially from each other by means of first horizontal bands and second vertical bands which are obtained by thermoforming or other connection methods.
 4. The panel according to claim 1, wherein said pockets substantially have the same rectangular shape, the same height, but do not all have the same dimension in terms of width, said pockets of said first mat arranged at the ends of said panel being narrower than the corresponding ones of said second mat once said pockets are assembled to constitute said panel.
 5. The panel according to claim 1, wherein said pockets substantially have the same shape, the same height and the same dimension in terms of width.
 6. The panel according to claim 1, wherein said first and second mats are mutually adjacent and mutually offset both along said horizontal axis and along said vertical axis by a chosen space.
 7. The panel according to claim 1, wherein said panel, once said first and second mats have been mutually assembled, by mutual adhesive bonding of respective lateral surfaces arranged mutually adjacent beforehand, is provided with vertical lateral edges which substantially coincide for said first and second mats, while it has, for said first mat, horizontal perimetric edges which are offset with respect to horizontal perimetric edges of said second mat.
 8. The panel according to claim 3, wherein said first horizontal bands and said second vertical bands of said assembled first and second mats are mutually offset, said first mat having the regions affected by said first horizontal bands and by said second vertical bands offset with respect to those of said second mat, except for said vertical lateral edges of said panel.
 9. The panel according to claim 1, wherein laterally to most or all of said first horizontal bands and said second vertical bands there is the portion of one of said pockets that is thicker.
 10. The panel according to claim 1, wherein all of said pockets of said first and second mats are identical in shape and size, an offset in the assembly of said first and second mats forming protruding portions for each mat at the four sides. 